CN2250583Y - Sparking plug for igniting IC engine - Google Patents

Abstract

The utility model relates to a sparking plug for igniting an internal-combustion engine, comprising a center electrode, an insulator, a casing body and a lateral electrode. The hook body of the hook lateral electrode which is made of rectangle flat wires is welded with the casing body, and the hook part corresponds to the center electrode. The utility model is characterized in that the entire rectangular surface of the hook part of the lateral electrode is split into two parts with a V-shaped opening from the end part, and is in a Y-shaped structure. The sparking plug can effectively eliminate the flame eliminating function and the carbon bridge phenomenon of the electrode, can enhance the reliable validity of ignition, and have the obvious effects of reducing exhaust pollution and saving oil. The sparking plug can overcome the poor starting which results from the fouling and the carbon deposit of an engine, and keep the stability of an idle speed and a rotating speed. The sparking plug has the advantages of engine performance improvement, equal service life and good manufacturability, and does not increase material cost.

Description

The ignition internal combustion engine spark plug

A kind of spark plug for the ignition internal combustion engine use.

Spark plug contains central electrode, insulator, housing and lateral electrode.Lateral electrode is made of the lenticular wire of square-section.Lenticular wire is bent into hook-shaped, is welded in hook body end face on the ring end face of housing.The hook portion rectangular surfaces is relative with central electrode.During igniting, produce spark between central electrode and lateral electrode, light combustion mixture.Since the almost all topped firmly central electrode of rectangular side electrode, when engine cold starting, because of the low heat that can absorb flame nuclear of electrode temperature, the effect of formation flame arrest, combustion gas is lighted in the growth that is not easy to flame nuclear; In two stroke engine, soot in the what is called " carbon bridge " that forms between lateral electrode and central electrode as fine rule, causes engine to be difficult to igniting under the high-pressure electrostatic effect.

The utility model purpose is to provide a kind of and improvedly can overcomes the flame arrest effect of electrode and prevent that " carbon bridge " phenomenon from producing, thereby makes the more effective reliable spark plug of igniting.

Its technical scheme is with relative with central electrode, and all shelters from the complete rectangular surfaces of lateral electrode hook portion of central electrode, splits from the end to be divided into to have two parts that V-arrangement is dehisced, and becomes lateral electrode rectangle hook portion and becomes Y type hook portion structure as shown in Figure 2.

Owing on the lateral electrode of central electrode center, have V-arrangement to dehisce, cut down the heat absorption flame arrest effect of lateral electrode cold conditions greatly, the blending that helps combustion mixture flame nuclear district is again flowed, thereby under lower voltage, also can produce spark, and be convenient to the generation and the growth of flame nuclear, this not only can reduce the igniting error, increase the reliability of engine ignition, guarantee the stability of idling, and because igniting fully makes fuel gas buring more complete, exhaust emission also decreases, tangible oil-saving effect is arranged, also help and overcome two-stroke or the stained poor starting that causes of old carbonizing of engine, rotary speed unstabilization.

Fig. 1 is that spark plug configuration is always schemed.Fig. 2 is that the A of Fig. 1 is to zoomed-in view.Fig. 2 shows the planform and and the rough relative position relation of central electrode of new side electrode.1--wiring nut among the figure, 2--insulator, 3--wiring screw rod, 4--housing, 5--central electrode, 6--lateral electrode.

The lateral electrode V-arrangement dehisces to be isosceles triangle.By existing spark plug specification series, its geomery can change selection in following scope: 20 °～70 ° of V mouth angles, the V mouth degree of depth 1.8～3.0mm generally is the big degree of depth of little angle, the little degree of depth coupling of mitre.A preferred embodiment is: central electrode diameter of phi 2.5, and 53 ° of lateral electrode V mouth angles, degree of depth 2mm has satisfied ignition performance.

Because be to dehisce to be divided into two in lateral electrode rectangle end only, lateral electrode end area does not become, thereby heat-conducting effect is identical.Practice shows that also this spark plug has improved engine performance and but still had the electrode life identical with common spark plug.This structure also has the characteristics that do not increase material cost and good manufacturability.

Claims (3)

1. ignition internal combustion engine spark plug, comprise central electrode (5), insulator (2), housing (4), and lateral electrode (6), lateral electrode is made by lenticular wire, be bent into hook-shapedly, be welded in hook body end face on the ring end face of housing, the hook portion rectangular surfaces is relative with central electrode, it is characterized in that the complete rectangular surfaces of lateral electrode hook portion splits from the end to be divided into and have two parts that V-arrangement is dehisced, the Y-shaped structure of lateral electrode hook portion.

2. by the described spark plug of claim 1, it is characterized in that lateral electrode V mouth angle is 20 °～70 °, the V mouth degree of depth is 1.8～3.0mm.

3. by the described spark plug of claim 1, it is characterized in that the central electrode diameter is Φ 2.5,53 ° of lateral electrode V mouth angles, V mouth degree of depth 2mm.

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